Class: Sass::Tree::RuleNode

Constants

PARENT = '&' The character used to include the parent selector

Attributes

group_end	[RW]	Whether or not this rule is the last rule in a nested group. This is only set in a CSS tree. @return [Boolean]
parsed_rules	[RW]	The CSS selector for this rule, without any unresolved interpolation but with parent references still intact. It‘s only set once {Tree::Node#perform} has been called. @return [Selector::CommaSequence]
resolved_rules	[RW]	The CSS selector for this rule, without any unresolved interpolation or parent references. It‘s only set once {Tree::Node#cssize} has been called. @return [Selector::CommaSequence]
rule	[RW]	The CSS selector for this rule, interspersed with {Sass::Script::Node}s representing `#{}`-interpolation. Any adjacent strings will be merged together. @return [Array<String, Sass::Script::Node>]
tabs	[RW]	How deep this rule is indented relative to a base-level rule. This is only greater than 0 in the case that: This node is in a CSS tree The style is :nested This is a child rule of another rule The parent rule has properties, and thus will be rendered @return [Fixnum]

Public Class methods

new(rule)

@param rule [Array<String, Sass::Script::Node>]

  The CSS rule. See \{#rule}

[Source]

    # File lib/sass/tree/rule_node.rb, line 55
55:     def initialize(rule)
56:       #p rule
57:       merged = Haml::Util.merge_adjacent_strings(rule)
58:       #p merged
59:       @rule = Haml::Util.strip_string_array(merged)
60:       #p @rule
61:       @tabs = 0
62:       super()
63:     end

Public Instance methods

==(other)

Compares the contents of two rules.

@param other [Object] The object to compare with @return [Boolean] Whether or not this node and the other object

  are the same

[Source]

    # File lib/sass/tree/rule_node.rb, line 70
70:     def ==(other)
71:       self.class == other.class && rule == other.rule && super
72:     end

add_rules(node)

Adds another {RuleNode}’s rules to this one‘s.

@param node [RuleNode] The other node

[Source]

    # File lib/sass/tree/rule_node.rb, line 77
77:     def add_rules(node)
78:       @rule = Haml::Util.strip_string_array(
79:         Haml::Util.merge_adjacent_strings(@rule + ["\n"] + node.rule))
80:     end

continued?()

@return [Boolean] Whether or not this rule is continued on the next line

[Source]

    # File lib/sass/tree/rule_node.rb, line 83
83:     def continued?
84:       last = @rule.last
85:       last.is_a?(String) && last[-1] == ?,
86:     end

do_extend(extends)

Extends this Rule‘s selector with the given `extends`.

@see Node#do_extend

[Source]

     # File lib/sass/tree/rule_node.rb, line 111
111:     def do_extend(extends)
112:       node = dup
113:       node.resolved_rules = resolved_rules.do_extend(extends)
114:       node
115:     end

to_sass(tabs, opts = {})

@see Node#to_sass

[Source]

    # File lib/sass/tree/rule_node.rb, line 89
89:     def to_sass(tabs, opts = {})
90:       name = selector_to_sass(rule, opts)
91:       name = "\\" + name if name[0] == ?:
92:       name.gsub(/^/, '  ' * tabs) + children_to_src(tabs, opts, :sass)
93:     end

to_scss(tabs, opts = {})

@see Node#to_scss

[Source]

     # File lib/sass/tree/rule_node.rb, line 96
 96:     def to_scss(tabs, opts = {})
 97:       name = selector_to_scss(rule, tabs, opts)
 98:       res = name + children_to_src(tabs, opts, :scss)
 99: 
100:       if children.last.is_a?(CommentNode) && children.last.silent
101:         res.slice!(-3..-1)
102:         res << "\n" << ('  ' * tabs) << "}\n"
103:       end
104: 
105:       res
106:     end

Protected Instance methods

_cssize(extends, parent)

Converts nested rules into a flat list of rules.

@param extends [Haml::Util::SubsetMap{Selector::Simple => Selector::Sequence}]

  The extensions defined for this tree

@param parent [RuleNode, nil] The parent node of this node,

  or nil if the parent isn't a {RuleNode}

[Source]

     # File lib/sass/tree/rule_node.rb, line 200
200:     def _cssize(extends, parent)
201:       node = super
202:       rules = node.children.select {|c| c.is_a?(RuleNode)}
203:       props = node.children.reject {|c| c.is_a?(RuleNode) || c.invisible?}
204: 
205:       unless props.empty?
206:         node.children = props
207:         rules.each {|r| r.tabs += 1} if style == :nested
208:         rules.unshift(node)
209:       end
210: 
211:       rules.last.group_end = true unless parent || rules.empty?
212: 
213:       rules
214:     end

_to_s(tabs)

Computes the CSS for the rule.

@param tabs [Fixnum] The level of indentation for the CSS @return [String] The resulting CSS

[Source]

     # File lib/sass/tree/rule_node.rb, line 123
123:     def _to_s(tabs)
124:       tabs = tabs + self.tabs
125: 
126:       rule_separator = style == :compressed ? ',' : ', '
127:       line_separator =
128:         case style
129:           when :nested, :expanded; "\n"
130:           when :compressed; ""
131:           else; " "
132:         end
133:       rule_indent = '  ' * (tabs - 1)
134:       per_rule_indent, total_indent = [:nested, :expanded].include?(style) ? [rule_indent, ''] : ['', rule_indent]
135: 
136:       total_rule = total_indent + resolved_rules.members.
137:         map {|seq| seq.to_a.join}.
138:         join(rule_separator).split("\n").map do |line|
139:         per_rule_indent + line.strip
140:       end.join(line_separator)
141: 
142:       to_return = ''
143:       old_spaces = '  ' * (tabs - 1)
144:       spaces = '  ' * tabs
145:       if style != :compressed
146:         if @options[:debug_info]
147:           to_return << debug_info_rule.to_s(tabs) << "\n"
148:         elsif @options[:line_comments]
149:           to_return << "#{old_spaces}/* line #{line}"
150: 
151:           if filename
152:             relative_filename = if @options[:css_filename]
153:               begin
154:                 Pathname.new(filename).relative_path_from(
155:                   Pathname.new(File.dirname(@options[:css_filename]))).to_s
156:               rescue ArgumentError
157:                 nil
158:               end
159:             end
160:             relative_filename ||= filename
161:             to_return << ", #{relative_filename}"
162:           end
163: 
164:           to_return << " */\n"
165:         end
166:       end
167: 
168:       if style == :compact
169:         properties = children.map { |a| a.to_s(1) }.join(' ')
170:         to_return << "#{total_rule} { #{properties} }#{"\n" if group_end}"
171:       elsif style == :compressed
172:         properties = children.map { |a| a.to_s(1) }.join(';')
173:         to_return << "#{total_rule}{#{properties}}"
174:       else
175:         properties = children.map { |a| a.to_s(tabs + 1) }.join("\n")
176:         end_props = (style == :expanded ? "\n" + old_spaces : ' ')
177:         to_return << "#{total_rule} {\n#{properties}#{end_props}}#{"\n" if group_end}"
178:       end
179: 
180:       to_return
181:     end

cssize!(extends, parent)

Resolves parent references and nested selectors, and updates the indentation based on the parent‘s indentation.

@param extends [Haml::Util::SubsetMap{Selector::Simple => Selector::Sequence}]

  The extensions defined for this tree

@param parent [RuleNode, nil] The parent node of this node,

  or nil if the parent isn't a {RuleNode}

@raise [Sass::SyntaxError] if the rule has no parents but uses `&`

[Source]

     # File lib/sass/tree/rule_node.rb, line 224
224:     def cssize!(extends, parent)
225:       self.resolved_rules = @parsed_rules.resolve_parent_refs(parent && parent.resolved_rules)
226:       super
227:     end

debug_info()

A hash that will be associated with this rule in the CSS document if the {file:SASS_REFERENCE.md#debug_info-option `:debug_info` option} is enabled. This data is used by e.g. [the FireSass Firebug extension](addons.mozilla.org/en-US/firefox/addon/103988).

@return [{to_s => to_s}]

[Source]

     # File lib/sass/tree/rule_node.rb, line 246
246:     def debug_info
247:       {:filename => filename && ("file://" + URI.escape(File.expand_path(filename))),
248:        :line => self.line}
249:     end

invalid_child?(child)

Returns an error message if the given child node is invalid, and false otherwise.

{ExtendNode}s are valid within {RuleNode}s.

@param child [Tree::Node] A potential child node. @return [Boolean, String] Whether or not the child node is valid,

  as well as the error message to display if it is invalid

[Source]

     # File lib/sass/tree/rule_node.rb, line 237
237:     def invalid_child?(child)
238:       super unless child.is_a?(ExtendNode)
239:     end

perform!(environment)

Runs SassScript interpolation in the selector, and then parses the result into a {Sass::Selector::CommaSequence}.

@param environment [Sass::Environment] The lexical environment containing

  variable and mixin values

[Source]

     # File lib/sass/tree/rule_node.rb, line 188
188:     def perform!(environment)
189:       @parsed_rules = Sass::SCSS::StaticParser.new(run_interp(@rule, environment), self.line).
190:         parse_selector(self.filename)
191:       super
192:     end

Private Instance methods

debug_info_rule()

[Source]

     # File lib/sass/tree/rule_node.rb, line 253
253:     def debug_info_rule
254:       node = DirectiveNode.new("@media -sass-debug-info")
255:       debug_info.map {|k, v| [k.to_s, v.to_s]}.sort.each do |k, v|
256:         rule = RuleNode.new([""])
257:         rule.resolved_rules = Sass::Selector::CommaSequence.new(
258:           [Sass::Selector::Sequence.new(
259:               [Sass::Selector::SimpleSequence.new(
260:                   [Sass::Selector::Element.new(k.to_s.gsub(/[^\w-]/, "\\\\\\0"), nil)])
261:               ])
262:           ])
263:         prop = PropNode.new([""], "", :new)
264:         prop.resolved_name = "font-family"
265:         prop.resolved_value = Sass::SCSS::RX.escape_ident(v.to_s)
266:         rule << prop
267:         node << rule
268:       end
269:       node.options = @options.merge(:debug_info => false, :line_comments => false, :style => :compressed)
270:       node
271:     end

Methods

Constants

Attributes

Public Class methods

Public Instance methods

Protected Instance methods

Private Instance methods